Ink cartridge



FIG. 1 is a front elevation view of an ink cartridge showing my newdesign;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a top view thereof.

The ornamental design for an ink cartridge, as shown and described.